Pump.



F. L DU PONT.

PUMP.

APPLIoA'Hon FILED JULI 2s, 1909.

Patented Aug. 3o, 1910.

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FRANCIS I. DU PONT, OF WILMINGTON, DELAWARE,

ASSIGNOR T0 E. I. DU PONT DE NEMOURS POWDER COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION NEW JERSEY.

PUMP.

Speoieation of Letters Patent.

Patented Aug. 30, 1910.

Application tiled July 28, 1909. Serial No. 510,068.

To all whom 'it may concern:

Be it known that I, FRANCIS I. DU IoNT, a citizen of the United States, residin at Wilmington, county of Newcastle, and k tate of'Delaware, have invented a new and useful Improvement in Pumps of which the following is a full, clear, and exact description, reference being had to the accom anying drawings, which form a part ci) this specication.

My invention relates to a novel pumpconstruction. l

I will irst describe the embodiment of my invention illustrated in the acco1npanying drawin s, and then point out the invention in t e claims.

In the drawings: Figure 1 is a detail section view of an embodiment of my inven tion. Fig. 2 is a side elevation of the same.

The pump consists of the tube Z, the walls of which are quite thick. This tube is made of rubber, or a composition of rubber and canvas. It is supported verticali n are frames carrying the sproc o and the guide rails p. These sprocket wheels o o are interconnected to revolve at the same speed by means of the gearin g q.

1' are the s rocket chains, to `which c ains are connecte the rollers t carrying the guide rollers s, which bear against the guide rails As may be seen, these rollers t bear against the opposite sides of the tube Z, and, in the movement of the sprocket chain de- {late and release said tube, causing the material which is then in a liquid condition to be rapidly drawn through said tube.

Having now fully described my invention, what I claim and desire to protect by Letters Patent is l. A pump comprising in combination a iexible tube, and means to apply rolling pressure intermittently upon opposite sides of said tube.

2.- A pump com rising in combination a exible tube, revo ving pressing rollers on opposite sides of said tube between which the tube is pressed, and means to ca'use said rollers to travel along said tube.

3. A pump com rising in combination ya flexible tube, revo ving pressing rollers on opposite sides of said tube between which the tube is pressed, means to determine the pressure of said rollers on said tube, and means to cause said rollers to travel along said tube.

4. A pump com rising in combination a flexible tube, revo opposite sides of said tube between which the tube is pressed, guide rollers connected to said pressing rollers, and guides extending parallel with and adjacent to said tube on' which said guide rollers travel, and means to cause said rollers to travel along said tube. l

5. A pump, com rising in combination a flexible tube, revo ving pressin rollers in pairs on opposite sides of sai tube, the tube being pressed between a pair of rollers on opposite sides of the tube, and means to cause said rollers to travel along said tube.

G. A pump,`co rising in combination a flexible tube, revo ving pressing rollers in pairs on opposite sides of said tube, being pressed between a pair of rollers on opposite sides of the tube, means to determine the pressure ot' said rollers on said tube, and means to cause said rollers to travel along said tube.

7. A pump, com rising in combination a flexible tube, revo ving pressing rollers in pairs on opposite sides of said tube, the tube eing pressed between a pair of rollers on opposite sides of the tube, guide rollers connected to each pressing roller, and guides extending parallel with and adjacent to said tube on which said uide rollers travel, and means to cause sai rollers .to travel along said tube.

8. A pump com rising in combination a flexible tube, revo ving pressing rollers on opposite sides of said tube between which the tube is pressed, and means to cause the ving pressing rollers on the tube rollers on opposite'sides ,of the tube to travel said tube.

synchronously along v 9. A pump com rising in combination a flexiblel tube, revo ving pressing rollers on opposite sides of said tube between which the tube is pressed, means to determine the pressure of said rollers on said tube, and means to cause the rollers on opposite sides of the tube to travel synchronously along said tube.

10. A pump comprising in combination a flexible tube, revolving pressing rollers on opposite sides of said tube between which the tube is pressed, guide rollers connected to said pressingrollers, and guides extending parallel with and adjacent to said tube on which said' guide rollers travel, and

SOt

flexible tube,

tube,

lineans tocause the rollers on opposite sides of the tube to travel synchronously along said tube.

11. A pump, comprising in combination a flexible tube, revolving pressing rollers in pairs on opposite sides ofy sai tube, the tube being pressed between a pair of rollers on oppos1te sides of the tube and means to cause the rollers on opposite sides of the tube to travel synchronously along said tube.

12. A pump, comprising in combination a flexible tube, revolving pressin rollers in airs on opposite sides of said tu e, the tube eing pressed between a pair of rollers on opposite sidesof the tube, means to determine the pressure of said rollers on said tube, and means to cause the rollers on opposite sides of the tube to travel synchronously along said tube.

13. A pump comprising in combination, a flexible tube, a revolving ressing device, pressing against opposite si, es of said tube, and means to move said revolving pressing device longitudinally of the tube.

14. -A pump comprising in combination a flexible tube, a plurality of revolving pressing devices pressing against opposite sides of said tube, and means to move said revolvin pressing devices longitudinally of the u e.

l5. A pump, comprising .in combination a flexible tube, a carr1er on each side of said tube, pressing rollers mounted on. said carriers opposite each other and adapted to press the tube between them, and means to move said carriers.

16. A pump, comprising in combination a al carrier on each side of said tube, pressing rollers mounted on said carriers opposite each other and adapted to press the tube between them, and means to move the carriers on opposite sides of the tube synchronously. I

17. A pump, comprising in combination a flexible tube, a carrier on each side of said tube, pressing rollers mounted on said carriers opposite each other and adapted to press the tube between them, a uide roller for each pressing roller, and gui es ad'acent to and parallel with said tubes on whic said guide rollers travel and means to move the Cal'l'lllS.

18. A pump, com rising in combination a flexible tube, sproc et chains on opposite sides of said tube, sprocket wheels around which said chains travel, the chains between the sprocket wheels being parallel with said pressing rollers mounted on said sprocket chains and opposing each other and adapted to press the tube between them, and means to rotate said sprocket wheels.

. on opposite sides of the tube cease@ A 19. A pump, comprising in combination a flexible tube, sprocket c mins on opposite sides of said tube, sprocket wheels around which said chains travel, the chains between the sprocket wheels being parallel with said tube, pressing rollers mounted on said sprocket chains and opposing each other and adapted to press the tube between them, and means to rotate said sprocket wheels synchronously.

20. A pump, comprising in combination a flexible tube, sprccket chains on opposite sides of said tube, sprocket wheels around which said chains travel, the chains between the sprocket wheels being parallel with said tube, pressing rollers mounted on said sprocket chains and opposing each other and ada ted to press the tube between them, a

gui e roller for each 1pressing roller, uides l adjacent-'to and para el with said tu on which said guide rollers travel, and means to rotate said sprocket wheels. v

2l. A pump, comprising in combination a flexible tube, sprocket chains on opposite sides of Said tube, sprocket wheels around which said chains travel, the chains between the sprocket wheels being parallel with said tube, pressing rollers mounted on said sprocket chains and opposing each other and ada ted to press the tube between them, a gui e roller for each 1pressing roller, uides adjacent to and para el with said tu e on which said guide rollers travel, and means to rotate the sprocket wheels on opposite sides of the tube synchronously.

22. A pump comprising in combination, a flexible; tube, a plurality' of pressing rollers on each side of said tube, and/means to cause said pressing rollers to travel along said tube.

23. A pum a flexible tu e, a lurality -of res'sing rollers on each sideosaid tube, an means to determine the pressure of said yrollers against said tube.

24. A pump comprising in combination, a flexible tube, a plurality of pressing rollers on one side of said tube and an opposin pressure surface on the op osite side of sai tube, guide rollers carriedp by said ressing rollers, and a guiding surface parallel with said tube upon which said guide rollers travel.

In testimony of which invention, I have hereunto set my hand, at Wilmington, Del., on this 23d day of July, 1909. Y

FRANCIS i. DU PONT.

Witnesses: WM. STANIAR,

GORDON L. Nanos.

comprising in combination, l 

